10. Cleaning and maintenance
10.1 Cleaning
NOTE
Damage to product due to incorrect cleaning
• Do not use cleaners containing alcohol, organic solvents or thinners.
• Do not use abrasive materials.
• Use with high-pressure and steam cleaning equipment.
• Only clean the outer surface of the product (plastic cover and frame) if necessary.
• Clean the surface of the product with a dry, soft cotton cloth or a damp cloth with a little
washing-up liquid or neutral cleaner.
• Do not clean any other system components.
10.2 Maintenance
With the exception of the sealing components for the WRU 400 outdoor versions, the product
is maintenance-free
NOTE
Damage to product due to incorrect maintenance
• Do not carry out repairs.
• Do not use lubricants.
• Contact the manufacturer in the event of damage / malfunctions.
• If parts have to be replaced, always use original replacement parts from HÄFELE.
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4.3 Installation conditions for outdoor versions WRU 400, page 77.